Adjustable ventilator



March 1943- A. E. GUETTLER ADJUSTABLE VENTILATOR Filed June 5, 1940 5 m m r.

l l l l I l l I I I l I I I I l I l a I I I I I I I r fl ArL/Lu/"E. GuetLLer:

ATTORNEYS Patented Mar. 23, 1943 UNITED STATES FTENT OFFICE ADJUSTABLE VENTILATOR Arthur E. Guettler, New York, N. Y.

Application June 5, 1940, Serial No. 338,993

3 Claims.

This invention relates to adjustable ventilators and has for an object to provide a ventilator having the upper and lower frame bars beveled at the portions Where they are contacted by the slats to permit the slats to assume a substantially,

vertical wholly closed position.

A further object of the invention is to provide an adjustable ventilator having two groups of slats pivotally connected at the inner ends by metallic bars which are in turn connected to a crank which has a handle at its mid portion by means of which the slats of both groups may be simultaneously controlled.

A further object is to provide a device of this character in which the upper and lower frame bars have sliding joints at their intermediate portions, with respective panels disposed at the joints so that the ventilator frame may be extended or contracted to fit various widths of windows.

A further object is to provide a device of this character which will be formed of a few strong, simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantage of the invention.

In the accompanying drawing forming a part of this specification:

Figure 1 is a perspective view of an adjustable ventilator constructed in accordance with the invention.

Figure 2 is a fragmentary front elevation of the ventilator shown in Figure 1, and showing the frame dotted in extended position.

Figure 3 is a cross sectional view taken on the line 3--3 of Figure 2 showing one of the metallic connecting bars of a group of slats.

Figure 4 is a fragmentary cross sectional view of the ventilator showing the beveled portion of an upper frame bar and showing the slats assuming a substantially vertical wholly closed position in dotted lines.

Figure 5 is a cross sectional view taken on the line 55 of Figure 2 showing the dovetail sliding joint of the upper and lower frame bars.

Figure 6 is a perspective view of one of the metallic connecting bars of the slats.

Figure 7 is a perspective view of the crank handle by means of which the slats are controlled.

Figure 8 is a perspective view of a corrugated latching means for holding the crank handle in position to maintain the slats in adjusted position.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, the ventilator frame comprises upper and lower frame bars i0 and H, and end bars l2 and I 3. The upper and lower frame bars at about the centers thereof are provided with respective dovetail joints [4 and I 5, best shown in Figure 5, to permit the frame being extended longitudinally or retracted upon itself longitudinally to fit various widths of windows. A pair of panels l6 and I! are secured to the jointed central portion of the upper and lower frame bars and slide'one upon the other to close a central space in the frame defined by the jointed portions of the upper and lower frame bars I l and by a :pair of bars I8 and I9 which are disposed on opposite sides of the jointed portions and are disposed parallel with the end bars l2 and I3, as best shown in Figure 1.

Preferably, two groups of three vertically superposed slats 20 are arranged in the end portions of the main frame between the end bars l2 and I3 and the bars I8 and I9 at the central portion of the frame. The slats are provided in the ends with gudgeons 2|, best shown in Figure 2, which are received in respective openings in the vertically disposed end bars and centrally located bars of the frame. Moreover, each slat is tapered at the upper end and at the lower end so that it is relatively thin at the ends and may thus overlap the next adjacent slat in such manner that when the slats are rocked to substantially vertical position the slats will be wholly closed and completely seal the space occupied by each group of slats as is shown by dotted lines in Figure 4. Each group of slats are controlled by a respective metallic bar 22 having apertured lugs 23, best shown in Figure 6, which receive pins 24 which project from adjacent ends of the slats above the gudgeons of the slats, as best shown in Figure 2.

When the controlling bar 22 is moved upwardly the slats will be closed and when the controlling bar is moved downwardly the slats will be opened. For moving the controlling bars 2!] simultaneously a pair of cranks 25, best shown in Figure 7,

have their inner ends inserted in a tubular handle 26 which is disposed in front of the panels H.

'The cranks 25 are engaged through openings 21 of the ends of the controlling bars 22. When the handle 26 is raised or lowered, the cranks are turned in a corresponding direction to correspondingly raise or lower the controlling bars and close or open the slats.

In order to permit the slats to assume a substantially vertical or a wholly closed position the lower faces of the upper bars Ill and the upper faces of the lower bars H are provided with recesses 29 each having a curved wall 30 and a straight inner wall 3|. The curved wall 30 and straight inner wall 3| provide a contour for the recess sufficient to permit the recess to loosely receive the upper longitudinal tapered portion of the upper slat of the respective groups and the lower longitudinal tapered portion of the lower slat of the respective group. For holding the slats in adjusted position arcuate corrugated latch members 32, best shown in Figure 8, are secured to the opposed faces of the intermediate bars l8 and I9 by screws or other connectors 33. The cranks 25 have wiping engagement with the latches and lodge between the corrugations thereof when the handle 26 is released to releasably hold the cranks in adjusted positions to maintain the adjustment of the slats from fully closed to fully open position.

Since the operation of the parts has been described as a description of the parts progressed, it is thought the invention will be fully understood without further explanation.

What is claimed is:

1. An adjustable ventilator comprising, a frame including upper and lower longitudinal bars, end bars connecting the longitudinal bars, intermediate bars parallel with the end bars connecting the upper and lower bars, a group of slats pivotally connected in the space between each of the end bars and the adjacent intermediate bar,

metallic bars pivotally connected to each group of slats for opening and closing the slats, cranks connected to the metallic bars, a handle comprising a tubular bar having the cranks telescoped within the same, the cranks being rotatably mounted in the intermediate bars, and arcuate corrugated latch members on the intermediate bars engaging the cranks to hold the slats in adjusted position.

2. An adjustable ventilator, comprising two open frames having their upper and lower bars extended inwardly with dovetail connections to permit the adjustment of the ventilator, panels carried by the extended ends of the upper and lower bars, groups of slats pivotally connected to the open frames, operating bars connected to each group of slats, a crank pivotally mounted in the inner end of each open frame and connected to the operating bars for moving the same, said slats being tapered at their upper and lower longitudinal edges, adjacent slats overlapping when in vertical closed position, said longitudinal bars of the open frames being recessed to receive the upper edges of the uppermost slats and the lower edges of the lowermost slats, and a handle connecting the cranks between the open frames.

3. An adjustable ventilator, comprising a rectangular frame having a central solid portion with openings on each side thereof, a group of slats pivotally connected within each opening, bars pivotally connected to each group of slats for opening and closing the same, a crank pivotally mounted in the outer ends of the solid portion and connected to each bar, and a handle comprising a tubular bar extending across the central solid portion of the frame and having the cranks telescoped within the same.

ARTHUR E. GUETTLER. 

